Silo.



A. o. HUBBARD.

SILO. APPLICATION FILED NOV. 4,1910. K 1,930,464, Patented June 25, 1912. 2 SHEETS-SHEET 1.

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A. O. HUBBARD.

SILO.

APPLIGATION HLEDNOV. 4, 1910.

1,030,404 Patented June 25, 1912.

Z SHEETS-SHEET 2.

able provision being made for kpreventing- `Inet-al with the contents of therious constructions and combinations, all as y .ARTHUR O. I-ITJ'BBABD, OF MINNEAPOLIS, MINNESOTA.

sito.

Specification of Letters Tiatent.`

)Patented June 25. 1912.

Application led November 4, 1910. Serial No. 590,702.

To all 'whom it may concern:

Be it lnownthat I, ARTHUR 0. HUBBARD, of Minneapolis, HennepinY county, Minnesota, have invented certain new and useful Improvements in Silos, of which the following is a specification.

The objectof my invention is to provide a silo construction which will permit the use of metal uprights or bars in connection with 'the intermediate wooden panels, suitcont-act of the silo.

A further object is to reduce to a minimum the vertical seams or joints in the silo through which the acids contained therein may pass into contact with the skeleton metallic inclosure.

A further object is to improve the construct-ion of the silo at the sides of the door opening therein.

The invention consists generally in vahereinafter described and particularly pointed out in the claims.' Y

j In the accompanying drawings forming part of this specification, Figure 1 is an elevation of the lower portion of a silo embodying my invention, Fig. 2 is a horizontal sectional View of the same, Fig. 3 is a sectional View on thev line y-y of Fig. 2, Fig.

4 is a front view showing the door frame,y

Fig. 5 is a sectional view on the line aof Fig. 4, Fig. 6 is a horizontal sectional View showing the construction of the joint.

between the panels, Fig. 7 is a sectional View illustrating the manner of bracing and securing the opposite portions of the door frame, Figs. 8 and 9 illustrate slightly modilied constructions.

In the drawing, 2 represents the vertical panels of a silo, each consisting of a series of narrow wooden strips placed edge to edge in substantially the manner shown in my Patent No. 741,403, issued October 13, 1903. In my former patent I employ wooden uprightsl between the panels. With the growing scarcity of lumber, these uprights have added materially to the cost of the silo and I therefore prefer to employ a metal upright 3 having an inner web 4, side webs 5 and an outer web 6. This outer web forms practically a continuation of the web 4, the Webs 5 being disposed upon opposite sides of the upright and being preferably inclined inwardly to a slight degree, as indicated in Fig. 6, to conform to the curvature of the walls of the silo. The edges of the panels 2 have recesses 7 formed therein by rabbet, ing the ends of the strips and into these recesses the web 4 fits snugly, the ends of the panels abutting against the webs 4 and 5 and forming a close joint therewith. The recesses 7 terminate at the bottom or toward the inner surfaces of the panels in a deeper recess 8, into which a tongue 9 is inserted to lock the panels together and prevent them from slipping out of place in case of shrinkage of the Wood. These locking tongues are inserted at suitable intervals during the erection of the silo and, if found necessary, may extend from the top to the bottom to more thoroughly separate the metal uprights from the acids -of the silo contents. The web 6 has notches 10 therein at inten vals to receive hoops 11 which' extend around the silo and clamp the' metal up J rights and the panels securely together.

On each side of the door opening, metal rails 12 are arranged, composed of channel bar, and preferably of galvanized material. These rails receive the edges of the' panels on each side of the door opening and form a seat for 'the edges of the doors 13, as shown in Fig. 2. Bolts 14 have their ends projecting through counter sunk .holes in the rails 12 and riveted therein, and sleeves 15, mounted on said rods, having their endscontacting with said rails, hold them in parallel relation. Cross bars 16 are mounted on the doors and locking devices 17 are an .ranged to contact with the outer faces of the rails to clamp the bars against the inner faces thereof. These bars 16 are arranged 'between the hoops and the sleeves 15'and may be utilized, with the hoops and sleeves, in climbing up the sides'of the silo.

In Fig. 8 -I have illustrated a modified construction which consists in placing a tongue- 9 in the joint between the ends of the panels'and arranging this tongue parallel with the web 4 instead of crosswise thereof, as shown in Fig. 6.v In 9 the tongue is entirely omitted, .the web 4 fitting into the recesses formed in the abutting edges of the panels to correspond, substan* tially, to the one shown in-Fig. 6.

The metal uprights may be made of suit- -able weight and the width of the webs may be Varied, if preferred, to suit the different sizes 0f silos. These metal uprights. may vary in form to suit different condltions and I do not wish, therefore, to be confined to /tlie construction herein shown. Various other modifications may also be made in the details of construction without departing from the spirit of myinvention.

`I have shown the panels in this silo coinposed of comparatively narrowwooden strips, but do not confine myself to this construction as suitable blocks,'such asltile, may be substituted in place of the wooden strips to foi-in vertical panels, the ends \of the .blocks Aabutting against the side and inwardly extending iianges of the metal bars.

I claim as my invention 1. A silo composed of upright panels having abutting vertical edges, upright metal bars having inner` and outer vertical webs, said inner webs projecting into the joints between the edges of abutting panels butv extending only partially therethrough, the i ,iiixiner 4 ortionshpf said joints preventingcontact oi the acidsr in the silo with said bars, side webs extending laterally from said inner and outer webs and nhcoperating with said inner webs to form seats for the outer portions of the abutting' edges of said panels, said outer webs projecting' outwardly beyond said side Webs, and hoops seated on said outer webs. 2. A silo 'composed of upright panels having abutting vertical edges, the outer poi'- tions ofsaid vertical edges havingvrabbets formed therein, upright metal bars having inner webs seated in said rabbets, the inner portions of said vertical edges forming a j lose, acid-tight joint between said webs and the interior of the silo, side webs extending laterali from said inner web and forming angles 'herewith to receive the outer portions of the vertical edges of said panels? outer webs forming outward extensions of said inner webs and projectingbeyond said \side webs, and hoops inclosing the silo and -seated on the edges of said outer webs.

.v A silo composed of "upright panels star-shaped, substantially, in cross section, bridging the joints between said panels on the outside'oi the silo, one of the webs of each bar extending yinto the joint between tlie'fianels and forming, iv'th other. webs, a seat for the edges of the panels, another web projecting outwardly and having notches tliereina and hoops seated in said notches.

In witness whereof, l have hereunto set my hand this 24th day of October 1910.

. ARTHUR O. HUBBARD.

Vitnesses: -f

GENEVIEVE E. SonENsnN, C. REHFUss.

Copies of this patent may ne obtained for ve Jcents-each, by addressing the Commissioner oi. Patents,

Washington, D. G.

placed edge to edge, upright nietal bars,A 

